automated trading with esignal

I have recently decided to use esignal and i have some questions. and i need a suggestion on which broker to choose.
1. Can you please suggest me of the broker/s that has the fastest and most reliable execution of trading orders with esignal?
I am trading on the CME futures and using automated trading with esignal.

2. I understood that the connection between esignal and the broker in automated trading is made by a plug-in.
my question is: while making a market order(using automated trading), is it possible that there will be a delay from the moment esignal gave the order until the broker sent the order to the CME?
if there is a delay, how long can it be? is there a way to trade automatically with esignal without a delay?

3. Are there any bugs that can happen because of this "plug-in"? like: is it possible that the broker will send the order to the CME on a different price than what i wanted in the esignal charts? are there any other bugs that can happen because of the plug-in?